Spiral-tube-winding machine.



No 866,108. PATENTED SEPT. 17, 1907.

G. H. BARTLETT. SPIRAL TUBEWINDING MACHINE.

APPLIUATION FILED APB.1,1907- 2 SHBBT$- TIEET i.

IN VENTUR A TTORNE Y .nu: NORRIS psrsns co, wasumcmu. n. c

PATENTED sEPT.-17,'190v.-

G. H. BARTLETT. SPIRAL TUBE WINDING MACHINE.

APPLIUATION FILED APR. 1, 1907.

2 SHEETS-SHEET 2.-

INVEDNTO ATTURNE Y UNITED STATES GEORGE H. BARTLETT, OF SAN FRANCISCO, CALIFORNIA.

SPIRAL-TUBE-WINDING MACHINE.

Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed April 1,1907. Serial No. 365,813.

To all whom 'it may concern:

Be it known that I, GEORGE H. Bniyrnnrr, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Spiral-Tube-Winding Machines, of which the following is a specification.

My invention relates to an apparatus for the winding of spiral tubing, such as employed for mailing tubes, round boxes, paper cores, mandrels and for any like articles, and made of any material which may be so wound, and for any purpose for which such tubing may be employed.

It consists in a combination of mechanism, and in details of construction which will be more fully explained by reference to the'accompanying drawings, in which Figure 1 is a front elevation of my spiral tube winding machine, showing its construction. Fig. 2 is a plan View of same, partially in section. Fig. 3 shows part of a two-ply spiral tube, as it comes from the machine.

It is the object of my invention to provide a simple, easily adjustable and automatic winding device upon which any form of spiral tubing of sizes from oneeighth of an inch upward may be rapidly and accurately completed.

My apparatus may be variously constructed. As shown in the present case, A is a suitable frame or base having a standard with a mandrel 2 of a size proportionate to the size of tubing which is to be made.

The standard 3 is here shown as fixed upon the support A, and the mandrel projects horizontally from the upper part of this standard.

4 is a yoke or frame centrally pivoted and turnable about its pivot 5 upon the base A, and with relation to the mandrel 2. At the upper upturned ends of the yoke 4 are journaled pulleys 6. As shown those pulleys are made with a number of grooves or channels around which pass a narrow endless belt having a corresponding number of runs or members 7. This belt passes around one pulley, thence around the mandrel, thence around the other pulley, returning again around the mandrel and the first pulley, and so on until as many of the grooves of the pulleys are occupied as may be desired, the number depending upon the width of the material which is to be employed in making the spiral tube. From the first pulley the final bight of the belt depends, passing over a suitable guide pulley 9, and over another pulley 10 from which is suspended a suitable weight 11. This weight serves to maintain a tension upon the endless many membered belt, and

. to draw all portions of the belt equally tight around the mandrel so that whether a wide or a narrow piece of material is to be used to make the tube, the pressure will be substantially equal from one edge to the other,

thus overcoming a difficulty which is met with when it is attempted to employ a wide belt to wind the material around the mandrel, since such a belt cannot have an equal pressure from one side to the other. The yoke 4 has secured to it substantially centrally a standard 12. The pivot pin, with its locking nut at 5, allows this portion to be turned to any desired angle with relation to the base A, and the mandrel 2, and I am thus enabled to vary the angle at which the material is wound upon the mandrel so that a short or a rapid spiral may be turned around the mandrel; the angle being dependent upon the angle of adjustment of the standard and the yoke which carries the pulleys with relation to the mandrel.

In order to propel the pulleys 6, and cause the belt to travel, I have shown pulleys 13 upon the ends of the shafts of the pulleys 6, and a driving pulley 14 is shown journaled at the upper end of the standard 12. Around this driving pulley and the pulleys 13, an endless belt 15 passes. This belt passes from the pulley 14 around a guide pulley 16 journaled at the base of the standard 12, thence passes out around the pulleys 13. These pulleys have as many grooves as may be necessary to insure frictional driving power to propel the pulleys 6 and it will be seen that whatever change in angle is made affects the whole of the super-structure carried by the yoke or bracket 4 and the standard 12.

The material to be formed may consist of strips of such width as desired, and a mandrel of the size to form the required tubes being fixed in the standard 3, and the pitch of the spiral being determined, the yoke 4 with the pulleys 6 and cord are turned to such an angle with the mandrel as will insure the proper overlapping of the material. The end of the material is then introduced between the mandrel and the coils of the cord as shown at 17, and when the reinforcing strip 18 is to be used, this is also introduced exterior to the first named strip, and in such position that it will be wound over the joint of the first named strip. As long as the material is fed between the mandrel and the cord, a tube will be continuously formed, and the length of the tube will be determined by the length of the material used; its diameter also depending upon the mandrel.

It will be seen that by reason of the Weighted endless cord any size of mandrel may be employed within the limits of the extension of the cord, and the length between the guide pulley 9 and the weight-suspending pulley will be suflicient to allow of a very considerable take up or extension of the endless cord, and the pull of the Weight will be applied equally to all the runs or members of the cord as is necessary to insure the proper coiling of the material.

It will be understood that the material may be passed through the proper paratfining or other coating or preparing device, and the gluer or other means by Which the overlapping edges of the tube are caused to adhere, as Well as the drier, when such device is required. These not being any part of my invention are not shown in the present apparatus which relates particularly to the means for coiling the tube and providing an automatic tension device, and means for varying the pitch of the spiral.

It will be manilest that the pitch oi the tube could be varied by changing the position ol' the mandrel 2 instead of that ol the pulleys and belts, the result being substantially the same in either case, also that spring or other tension-maintaining devices may be substituted for Weights.

Having thus described my invention, What I claim and desire to secure by Letters Patent is 1. In an apparatus l'or Winding spiral tubes, the c01nb1- nation of a support turnably mounted and having driving pulleys at opposite sides of its pivot, a mandrel fixed rela tive to said support, a single endless belt passing around said pulleys and having a plurality of runs or members arranged substantially side by side and each or said members pa, in around the mandrel, said support being turnable to adjust the angle oi travel of said members with relation to the mandrel.

2. In an apparatus for winding spiral tubes, the combination of a support pivotally mounted between its ends and having driving pulleys at opposite sides of the pivot, a mandrel iixed with relation to said support, and a belt or cord passing around said driving pulleys and having a plurality of turns around the mandrel, and means for operating the belt.

2;. In an apparatus for winding spiral tubin a mandrel, multi-grooved pulleys journaled upon opposite sides of the mandrel, a many member-ed cord or belt having a plurality of turns passing around the pulleys and the mandrel, and

means by which the tension 01' all the members ihereoi' around the mandrel is equalized.

I. In an apparatus for winding spiral tubing, :1 mandrel, a yoke or bracket pivoted and turnable with relation to the mandrel, multi-grooved pulleys turnable in the ends ol' lho bracket, an endless cord or belt having, a plurality ot' lllllls around the mandrel and around the pulleys. a \veia'htrarryingpulley around which a single bight ol' the cord or belt passes whereby an equal tension of all parts ol' the cord is brought upon the mandrel and the interposed malt rial, means for propelling the pulleys.

5 In an apparatus for windingspiral tubing. :1 horizontally supported mandrel, a bracket having grooved pulleys revuluble at its ends, the axes olf said pulleys boina approxi mately in the plane oi? the axes of the mandrel, a standard carried by the bracket, grooved power and direction pulleys carried upon the standard, pulleys upon the ends oi the shafts of the winding cord pulleys, and an endless boll passing around said pulleys and the driving and direeiiou pulleys, said bracket and parts carried thereby being adjustable relatively to the mandrel to vary the pitch olf the spiral.

(i. In a spiral winding apparatus, the combination ol :1 mandrel, an endless traveling belt composed of a series oi members arranged substantially parallel. eaeh ol said members having a Winding around the mandrel and means for varying the angle of the members relative to the mandrel.

7. ln a spiral Winding apparatus, a mandrel, a plurality of members arranged substantially side by side and torm ing a traveling endless belt, each of said members l orlnilln' a spiral turn about the mandrel, and means for equalizin the tension of the turns about the mandrel.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

GEORGE ll. lZAll'lld-I'ld.

Witnesses S. II. Nonnsn, FREDERICK I). h lar'nam). 

